<body>
<script>
/*
    A test to make sure unmatched beginLayer calls do not render.
*/
var canvas, ctx;
canvas = document.createElement("canvas");
canvas.width = 200;
canvas.height = 200;
document.body.appendChild(canvas);

ctx = canvas.getContext("2d");
ctx.fillStyle = 'rgba(0,0,255,1)';
ctx.fillRect(60,60,75,50);

ctx.globalAlpha = 0.5;

ctx.beginLayer();

ctx.fillStyle = 'rgba(225,0,0,1)';
ctx.fillRect(50,50,75,50);

ctx.beginLayer();

ctx.fillStyle = 'rgba(0,255,0,1)';
ctx.fillRect(70,70,75,50);

ctx.endLayer();
</script>
</body>